Grate for stoves and furnaces



2 Sheets-Sheet 1.

(No Model.)

- O. W. NOBLE.

GRATE FOR swovas AND FURNACES.

' Patented -Ma, y 9, 1882;.

W N EJE'SEE" Z? (No Model.)

2 Shegts-Sheet 2.

O. W. NOBLE.

GRATB FO'R STOVES AND FURNACES.

Patented May 9, 1882.

WVV/ZN INVENTUFK Lilhogmpher. Washington. 04 c.

UN TED E-Sf.

PATEN OFF-Ice.

o'soAn wLNoBLa-on LYNmiaAssAcfiUsE-Trs, Assteivon ,troHiMsnLF AND ROBERT L.-MURKLAND,- OF SAME PLACE. 1 s.

GR 'TY E} For: stoves ANDiF'URNA CES Q SPECIFICATION formin m ofLetters PaattNa ga-w, dated M ay 9, 1882. I

a Application tiledMar' 'c h 22,1882. 1% model.) l i To all whom 'itma y concern:

Be. it known that I, Oscan W. NOBLE, a citizen of the United States, residing at Lynn, in

the county of Essex and StateotMassachusetts,

have invented certain Improvements in Grates for Stoves and Furnaces, of which thefollowing is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a plan of a stove-grate constructed in accordance with myinvention. Fig. 2 is a vertical section through the center of the same onthe line so azof Fig. 1. Fig. 3 is a vertical section on the line 3 y of Fig. 1. Fig. 4 1 is a perspective view of the central dumping portion of the grate; Fig. 5, a sectional detail.

My invention consists in the combination, with an open center grate, or" a central dumping portion, of convex form on its upper side, so hung or pivoted to the grate itself that while being turned or dumped the distance between its convex surface and the edge of the central openingin the grate will always remain the same, thus preventing the coal or clinkers from getting between the grate and the dumping portion on the side toward which the latter is turned and obstructing its movement, while the pivoting of the arbor of the dumpingcenter directly to the grate itself, instead of to 0 an adjacent portion of the stove-frame, as heretofore, enables the arbor to be used for the double purpose of shaking the grate horizontally and dumping the center, thus simplifying the construction and greatly facilitating these operations; and my invention also consists in certain details of construction, as hereinafter set forth and specifically claimed.

In the said drawings, A represents that portion of the base or frame 'of' the stove which contains the circular grate B, which rests upon supports a projecting from the base, and is adapted to be shaken by reciprocating it in a horizontal plane. This grate B is provided with a series of downwardly-inclined and inwardly-projecting radial arms or bars, 0, of such length as to leave a large central opening, 0, within which is fitted the central dumping portion, D, the upper surface of which is of convex form, as seen in Figs. 2, 3, 2111(14. This portion D is so mounted on an arbor, E,

located below the plane of its lower edge, that when rotated it will have a ,cranktnotiom'the inner portion of the, arborfbeingfpivotedYin a lug, d, projecting downfrom thegrate-b'ars'b, while theouter portion has its bearings in a bifurcated lug, G, also projecting from the grate, in which it is supported by a pin,f,- and with this construction and arrangement the dumping portion 1) moves in the arc fa circle having its center at a point which will cause the distance between its convex upper surface and the edge of the central opening,

0, of the grate B, formed by the inner ends of the bars I) on the side toward which the por- -tion D is turned, to always remain the same during the operation of dumping, which is an important feature, as it prevents coal or clinkers from getting between the grate and the portion D onthe side toward which the latter is turned, and thus obstructing or clogging it, as would be liable to occur it the width of the opening between them was at any time increased, while when the portion Dis dumped the central opening, c, of the grate is left entirely clear and open to its full extent, which is of great advantage, especially in removing clinkers. The central portion, D, is weighted to keep it in its proper position when up, as seen in Fig. 3, and the convex upper surface of this portion extends above the edge of the So opening 0 or the inner ends of the grate-bars b, the apex or highest part6 being on a level with the outer edge of the grate B.

The arbor E is provided with a collar or flange, g, extending partially around it, the ends 7 S of the flange forming stops, which strike alternately against a projecting rib or portion, h, ofthelug G, and thus limit the rotation of the dumping portion D in either direction, the flange g, by taking a bearing 0 against the inner surface of the lug G, also serving to hold the arbor E in place and 'prevent it from being withdrawn in the direction of its length.

The grate B is provided with the usual stops, 5 r

9 10, to limit its movement in either direction while being shaken, and by placing the lugsd G for supporting the dumping portion on the grate itself the entire grate, with the dumping portion, can be removed at a single operation,

thus avoidingthe troubleand annoyance which have heretofore been experienced in grates of this description where the dumping portion is pivoted to the frame of the stove. It will be seen that the dumping can be effected at any time and when the grate is in any position,

and' by thus combining the shaking and dump ing devices so that they can be operated by a single shaft or arbor, E, instead of having one device for dumping and another for shaking,

as has heretofore been customary in dumping center grates, the construction is greatly siniplified and the cost materially reduced, while the grate is much less liable to becomeclogged or be broken or deranged by hard usage.

- I am awarethata grate has been constructed having a centralopening provided with an independent dumping portion, and therefore make no broad claim to such device; but

What I claim as myinvention, and desire to secure by Letters Patent, is

1. The combination, with theopcncenter grate B, of the convex central dumping portion, D, extending up above the edge of the central opening, 0, and pivoted directly to the grate B, said portion D being provided with a shaft or arbor, E, which serves the double purpose of reciprocating or shaking the grate and dumping the central portion thereof when the grate is in any position, substantially as described.

2. The combination, with the grate B, dumping portion D, and lug G, with its rib or portion h, of the arbor E, provided with a collar or flange, g, extending partially around it, and having ends 7 8, which form stops for limiting the movement ot the dumping portion D in either direction", substantially as described.

Witness my hand this 13th day of March, A. D. 1882.

OSCAR W. NOBLE.

In presence ot'- P. E. Tnsonnnonnn, W. J. CAMBRIDGE. 

